Database Design Crossword Puzzle
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QUESTIONS LIST:
- cardinality : defines the number of entity instances involved in a relationship.
- surrogatekey : an artificial key used to uniquely identify records.
- redundancy : unnecessary duplication of data in a database.
- join : operation used to combine rows from two or more tables.
- eer : extension of er model with subclassing and specialization.
- candidate : a potential key that can uniquely identify tuples.
- domain : the allowed values for an attribute.
- weakentity : an entity that depends on a strong one and has no key of its own.
- mapping : process of converting er diagrams into relational schema.
- dependency : relationship showing how one attribute value determines another.
- tuple : a single row of a relation.
- superkey : a set of attributes that uniquely identifies a tuple.
- participation : constraint that determines whether all entities are involved in a relationship.
- schema : structure that defines how a database is organized.
- aggregation : treating a relationship set as an entity set.
